linux-kernel - Re: [PATCH] iwmc3200wifi: Fix test of unsigned in iwm_ntf_stop_resume

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Date:	Wed, 16 Dec 2009 09:53:15 -0500
From:	Pavel Roskin <proski@....org>
To:	Roel Kluin <roel.kluin@...il.com>
Cc:	Samuel Ortiz <samuel.ortiz@...el.com>, Zhu Yi <yi.zhu@...el.com>,
	Intel Linux Wireless <ilw@...ux.intel.com>,
	linux-wireless@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] iwmc3200wifi: Fix test of unsigned in
 iwm_ntf_stop_resume_tx()

On Wed, 2009-12-16 at 14:08 +0100, Roel Kluin wrote:
> `queue' is unsigned so the test did not work.
> 
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>
> ---
> Found using coccinelle: http://coccinelle.lip6.fr/
> 
> diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
> index 1c57c1f..9ac72e4 100644
> --- a/drivers/net/wireless/iwmc3200wifi/rx.c
> +++ b/drivers/net/wireless/iwmc3200wifi/rx.c
> @@ -1128,7 +1128,7 @@ static int iwm_ntf_stop_resume_tx(struct iwm_priv *iwm, u8 *buf,
>  			struct iwm_tx_queue *txq;
>  			u16 queue = iwm_tid_to_queue(bit);
>  
> -			if (queue < 0)
> +			if (queue == -EINVAL)

I think it's ugly.  iwm_tid_to_queue() should return int if it's allowed
to return error codes.

-- 
Regards,
Pavel Roskin
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